alsing



2 Sheets-Sheet 1.

P. ALSING. Recording Ship's Compass. No. 230,215. Patented July 20,1880.

I/EVENTOR i ATTORNEYS.

UNTTED STATES PATENT @rrrea FREDERIK ALSING, OF COPENHAGEN, DENMARK, ASSIGNOR TO HIMSELF HARALD SAOHMANN, AND CHRISTIAN DONS, OF SAME PLACE.

RECORDING SHlPS COMPASS.

SPECIFICATION forming part of Letters Patent No. 230,215, dated July 20, 1880. Application filed February 6, 1880. Patented in Germany October 11, 1877, and in England July 16, 1872).

.T all whom it may concern:

Be it known that I, FREDERIK ALsINe, of Copenhagen, Denmark, have invented a new and useful Improvement in Self ltegistering Compasses, of which the following is a specification.

Figure 1, Sheet 1, is a plan view of the improvement. Fig. 2, Sheet 1, is a sectional side elevation taken through the line 00 .r, Fig. l.

Fig. 3, Sheet 2, is a sectional end elevation taken through the line y y, Fig. 2. Fig. at, Sheet 2, is a side elevation, showing the mechanism. Fig. 5 is a detail view of the device for operating the time-pencil. Fig. (3 is a side 1 elevation of the mechanism for connecting the paper with the gear-wheels of the ehronometer. taken through the line .2 2, Fig. 2.

Similar letters of reference indicate corresponding parts.

The object of this invention is to furnish compasses provided with a mechanism so constructed as to record all changes of direction in the ships course and divide the diagram of the course into hour-spaces.

A represents a box of convenient size,which is provided with glass doors in its top, front, and end, to give convenient access to the interior of the box and to allow the mechanism to be inspected without opening the box A. To 0 the sides of the box A, or to supports attached to the said sides, are pivoted the opposite sides of a ring, B. To the opposite sides of the ring B, midway between its supporting-pivots, are pivoted the upper ends of two arms, 0, which 5 incline to the rearward, and their lower ends are rigidly attached to the rear side bar of the frame D.

To the lower part of the frame D is attached aforwardly-projectin g arm, E, having a weight,

F, attached to its forward end to balance the weight of the frame D and its attachments and cause it to hang horizontal.

The ring B and frame D work as a gimbal to hold the compass-card G always horizontal.

5 The compasscard G is pivoted in the usual way upon a point, 11, which is attached to the end of the upper arm of a right-angled bar, I.

The bar I is hinged at its angle to the upper edge of the rear side of the frame D, and its long arm extends downward along the rear side of the said frame. The lower end of the long arm of the bar I is held by a notched lever, J, so that it may be operated to raise the pencil K connected with the short arm of the said bar I away from the paper when desired. The bar I and lever J are held forward by a spring, L, attached to the support for the said bar I. To the side of the short arm of the bar I are attached keepers,in which slides a rod, M.

To the forward end of the rod is attached a pencil, K, or other implement, the point of which rests upon the paper to be marked. The rod M and pencil K are held back by a spring, N, connected with the rear partof the rod M and attached to the frame D.

Against the rear end of the rod M rests the upper end of the lever O, which is pivoted to a support, P, attached to the rear side of the frame D. Upon the lower side of the lower end of the lever O is formed an inclined or beveled projection or tooth, Q to engage with a similar inclined or beveled projection or tooth, R, formed upon the shaft S. Theshaft S is provided with a gear-wheel,T, connected with the gear-wheels of a chronometer, T, in such a way that the shaft S will make exactly one revolution each hour.

Vith this construction the inclined projections It Q will come together each hour, and will operate the lever 0 to push the rod M forward and to cause the pencil K to make a transverse mark upon the paper. As the pro jections R Q separate the rod M is drawn back by the spring N, ready to be again pushed forward at the end of the next hour.

The shaft S revolves in hearings in the rear part of the frame D, and in the upwardly-projecting forward end of an arm, D, rigidly attached to the frame D, and uponthe said shaft is placed a spool, U. The inner end of the spool U rests against a collar formed upon or attached to the shaft S, which collar is provided with a pointer, V, pointing to the divisionanarks of a dial-plate, W, attached to the forward side of the rear part of the frame D. The spool U is clamped against the collar or pointer V by a hand-nut, X, placed upon a screw-thread out upon the shaft S, so that the The paper should be soprepared that it may afterward be coated with varnish to preserve the marks. The paper Z passes over rollers a, pivoted to the frame D, and the roll of paper rests upon half-ring arms I), attached to the arm E, or upon other suitable support. The paperZis held tautby arms 0, attach ed to a shaft or rod, f, and held down upon the said paper by a spring, g, coiled around the said shaft. The shaft f is pivoted to the frame D. The spring 9 is attached at one end to the frame D and at its other end to the shaftf- To the compass-cord G are attached one or more tubular holders, 0, to receive a pencil or other marking implement, d, which is held down upon the paper Z by its own weight. The marker cl may be placed in either of the holders 0, as the general direction of the vessels course may render most convenient.

With this construction the paper Z will be carried forward by the movement of the clockwork T, and the marker K will register the hours, and the marker d will register the course of the vessel during each hour of the voyage.

With this construction the captain, by an occasional look at the paper Z, can see at a glance in what direction the vessel has been sailing and whether she has been held to her proper course. At the end of the voyage the paperZ may be detached and kept for future reference.

The above-described inventionw'as patented in England, July 16, 1879, No. 2,739, and in Germany, October 11, 1877, No. 1,532.

Having thus described my invention, I claim as new and desire to secure by Letters Patcut- 1. The ring B, pivoted in box A, in combination with the frame D, suspended by pivoted arms 0 from said ring, and having the counterbalance-weight arm E, for the purpose described.

2. The right-angled bar I, carrying cardpoint H, hinged toframe D, and having short arm connected with pencil K, in combination with the notched lever J and spring L, for the purpose specified.

3. The combination, with the gear-wheels of a chronometer, T, and the bar I, that carries the compass-card G, of the gear-wheel and shaft S T, provided with the inclined projection R, the lever O,provided with the inclined projection Q, the sliding rod M, provided with a marker, K, at its forward end, and the spring N, substantially as herein shown and described, whereby the marker K will be moved to mark a moving paper at regular intervals of time, as set forth.

4. The combination, with the shaft S, driven FREDERI K ALSING.

Witnesses:

NIELs (311R. HoLM, CARL COLLERUP. 

